Power device



J. HRvA'rH POWER DEVICE Sept. 21 1926.

Filed April 27, 1925 H .U INPI! |I Tllll Il. A

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Patented Sept. 21, 1926.

UNITED STATES u 1,600,472 PATENT ori-fics.

JOSEF HiavATH, or sTAMroRD, CONNECTICUT.

POWER DEVICE.

Application filed Apri1r27, 1925. Serial No. 26,021.

' of the motion of the turbine accurate to a very high degree as may be required for driving electrical generators and other machines which require great uniformity of mot-ion. y

A further object of my invention is to have saidA compensators comparatively simple, durable and inexpensive.

Other' objects and advantages will here, inafter appear.

I attain these objects Vby the compensator illustrated in the accompanying drawings or by mechanical equivalent or obvious modifications of the same. l

In the drawings, Fig. 1 is a side elevation of a Vcompensator constructed according to my invention. v

Fig. 2 is an enlarged detail view showing sundry details in elevation.

Fig. 3 is a fragmentary plan vieiv of one end of my compensator, showing the Yinitial pressure tank and the discharge tank with the auxiliary compensator-cylinder adjacent thereto. n u

Fig. 4 is an enlarged sectional view of a plunger, the cross section being taken on line Llc-J1 of Figure 1.

Numeral 11 designates the main pressureV tank, which isin communication with the water mains 12 of a 'city Water supply systern, and it is supplied with a check valve 13 to prevent backflowof water therefrom into the water main 12, when the pressure therein is reduced Vbelo7 a certain predetermined level.

, From the-tank 11 a 'pipe 14 leads t0 the vertical auxiliary cylinder 15, which-is comparatively small lin Asize and which has slidably working therein the piston 16, upon which the lower end of the spring 17 presses; the upper end of said spring 17y abutsagainst the arm 18 to which it isconnected as at 19.

rlhe leakage water from' the cylinder 15 above the piston 16 is carried by the pipe 20 to the discharge tray 21', from which Vitmay be carried off to the sewer by means of the drain pipe 22.

From the auxiliary cylinder 15 the water is led through a pipe 23 tothe main coinpensator cylinder 24. which is also vertical as shown and has sli'dably fitted therein the piston v25, which carries thereon the weight 26.

From the cylinder 2li the water isl led through the pipe 27 to the turbine28; and

the discharge` from the turbine` 28 is delivered through the flexible discharge tube 29 to the elevated chamber 3). The overflow is discharged through pip-e 31 vto the tray 21.

Sudden variations or fluctuations of pressure in the water from thek pressure tank 11 are counteracted or compensated for by the elasticity of the spring 17 of cylinder 15, and'by7 the weight of Ithe piston 16.

The pressure tank 11 is provided as a reservoir of water fortaking care of thel operation of turbine 23 during the intervals to act of time when the pressure in the water main 1s too low to supply enough water for this purpose.

The main compensator cylinder 24 serves to still further reduce the fluctuations in the water pressure by means of the weight 26, which covers the entire area of the pisvton 25, and the force developed remains constant during the entire range ofV positions of Vsaid piston 25 in vthe cylinder 2li-,I the only variation in pressure being due to the changing weight of `variable column of Water in said cylinders and 33 preventv back flow of water from the cylinder 15 to the tank 11 and from the cyliiiider V211 to the cylinder 15.

heck valves 32 The pistons 25 and 16 in their lowest posil tions engage respectively the stops 34 and 35, to prevent obstruction'v of the water pas! sages and check valves Vliereiiibefore described by the said pistons 25 and 16.

To compensate for the fiuctuation due to the variable head of Water in the cylinder, 24 I provide a discharge column of variable height by placingA the chamber 30 on avertically slidable support 36, whichniay actv as a plunger sliding in a cylinder 37 or a cross head inV a suitable i guide, preferably the former.

The lower end of the plunger 36 has con- -y nected thereto a roller 38, which rides on the arm 18, which is actuated by the piston 16, to which said arm 18 is connected.

In this way the descent of piston 16, which takes place when the column of water in the cylinders and 24 are falling to a lower level, automatically causes the plunger 36 with the chamber to descend, thereby reducing the height of the column of water in the discharge pipe 29 and thereby reducing the back pressure on the turbine 28 to the Same extent that the pressure or' the water in the pipe 27 has been reduced by the talling of the water in the cylinders 15 and 24 was reduced.

The cylinder of guide 37 may be so located with relation to the cylinder l5 as to make the variation of the level of the water in the chamber 30 exactly equal to the variation ot the level or" the water in the cylinder 24, it desired. The motions of pistons 16 and 25 are related to each other. F or villustra-.tiro pu-rposes, assume the pressure in tank 11 to fall. rllhe turbine 28 continues'to draw water froml cylinder 24 causing a Jfall in pressure and a corresponding fall in piston tall in pressure in cylinder 24 is immediat-ely comkmunicated to cylinder 15 through the coni necting pipe 23, and the piston 16Vis caused to tall. hen the pressure in cylinder 15 reaches the new reduced pressure in tank 11, the check valve 32 permits a flow ot'watcr. But when the piston 16 descended, the lever 18 correspondingly descended, lowering theV chamber 8O so as to reduce the exhaust resistance of the turbine 28, thereby unaffecting the running, of the turbine, even thou the entrance pressure was reduced. Sinnlarly had the pressure increased in tank 11, the piston 16 would ascend, and so would the piston 25. But the ascending piston 16 causes the lever 18 to raise, thus raising the chamber 30, and adding to the exhaust resistance ot the turbine, which` addition counteract the increased inlet pressure of the turbine, thereby having no aliect asto the running of the turbine.`r vIt should be noticed that check valve 33 functions to arr-esti the backtiow of water from cylinder 24 to 15, so that a change in pressure or' tank 11, and possibly cylinder 15, drawn off by Vthe turbine, instead of permitting backtlowing to equalize said change. p

AThe discharge tube 31 may be flexible it desired or part ot it may be l'l'exible at .39. The arm 18 is pivotally connected at 40 to the lpost 41, and lowers the piston 16V with the spring 17 when it swingsY downwardly; the piston within the; two cylinders 16 and 25 in this way reach their lowest positions at about the same time.

The leakage from the cylinder 24 past the Vpiston 25 may be carried od by means.V of the' pipe 42 to the tray 21, 4 v. As' illustratedfin Figure 4, the' plunger 36 Immediately check valve 32 closes.Y

carries at its upper end a movable plate 43 having a valve seat 44 in approximately its centre. rlhe plate 43 is guided by the rods 45, 46 about which springs 47, 48 are wound resting with their lower ends in plate 43 and engaging` with their upper ends a plate 49. The plate 49 carries a valve 50 adapted to engage'the valve seat 44.

By the above described arrangement and by n'iakingl the cylinder 24 ot' adequate size,

the pressure of water acting on the turbine will be uniform to a very high degree ot exactness for a considerable fluctuation in the pressure ot the water'in the tank 11 or in the mains which supply the same.

jin air chamber 51 maybe provided for vthe tank 11, it desired. y Y

Having thus described my invention what I claim asnew and desire to protect by Letters Patent of the United States is as tollows: y I

1. In a device of the class described the combination ot a turbine, an accumulator connected to the turbinevinlet, a cylinder, a ch eck valve controlled water inlet to said cylinder, a check valve controlled water connection from said cylinder to said accumulator, a piston slidable in said cylinder, a rod connected to said piston, a pivoted leveren- 3. In a device of the classdescribed .the Y combination of a turbine, an accumulator connected to the turbine inlet, a cylinder, a check valve controlled water inlet to said cylindena check valve controlled water connection from said cylinder `to said'accumwV lator, apiston slidable in said cylinder, a rod connected to said piston,.a pivoted lever engaged by said rod, and means tor varying the exhaust resistance otsaid turbine, said means being operated by said lever, and characterized by a plunger having a'roller at its lower end engaging said pivoted lever, a chamber fixed to the upper end of said` plunger, said chamber having a valve opening on its upper face, a valve head engage'-v able with said valve opening, a kieXib'le connection between the turbine exhaust and said chain'ber,an'd another connection from said valve opening to a drain device.`

In testimony whereof I have atixed my' ci'gna-ture.

Josnrnonvarn, Y Y 

